Optical amplification of propagating surface plasmon polaritons
DOI: 10.1364/QELS.2011.QFE5 In proceeding of: Lasers and Electro-Optics (CLEO), 2011 Conference on
Source: IEEE Xplore
ABSTRACT We demonstrate amplified spontaneous emission of long-range surface plasmon polaritons in planar metallic waveguides embedded in a fluorescent polymer. A net gain coefficient of 8±2 /cm has been realized for propagation up to 2 mm.
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ABSTRACT: The localized surface plasmon resonance of nanostructures is shown to exhibit a singularity when the surrounding medium exhibits amplification with a critical value of gain. This singularity can lead to large enhancements even when the gain is saturated. This composite medium should exhibit strong scattering within the plasmon band leading to low threshold random laser action and light localization effects. This effect could also greatly increase surface enhanced Raman scattering signals for rapid single, molecule detection, identification and sequencing.Applied Physics Letters 11/2004; 85(21):5040-5042. · 3.79 Impact Factor
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ABSTRACT: The authors report on gold nanoparticle enhancement of the gain in dyes/nanoparticles/polymer film for random lasers. Importantly, they demonstrate a lower threshold for lasing and a stronger output intensity, which depend on the nanoparticle (NP) size. By calculating the “NP scattering resonance” using Mie theory and the measured surface-plasmon resonance, we can qualitatively explain the results, suggesting that the random lasing properties are dominated by an enhanced photon scattering mechanism induced by the surface plasmons.Applied Physics Letters 11/2006; 89(19):191116-191116-3. · 3.79 Impact Factor
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